3 Definitions and abbreviations

23.0783GPPCustomised Applications for Mobile network Enhanced Logic (CAMEL) Phase 4Release 17Stage 2TS

3.1 Definitions

For the purposes of the present document, the following terms and definitions apply:

Basic Call State Model (BCSM): BCSM provides a high-level model of GMSC- or MSC/VLR-activities required to establish and maintain communication paths for users. As such, it identifies a set of basic call activities in a GMSC or MSC/VLR and shows how these activities are joined together to process a basic call.

Call Control Function (CCF): CCF is the Call Control Function in the network that provides call/service processing and control (see ITU‑T Recommendation Q.1224 [44]).

Call Party Handling (CPH) Information Flow: Any of the Disconnect Leg, Move Leg or Split Leg information flows.

Call Segment: A call segment contains one or more legs that are controlled by the same CS_gsmSSF instance. The call parties in the same call segment can communicate with each other (using a conference bridge if necessary). Call segments are identified by a number, eg. CSID1 is the call segment with id number 1.

Call Segment Association (CSA): A CSA contains one or more call segments. Legs can be moved between call segments within the CSA. There is a single CAP dialogue between the CSA and the gsmSCF.

Detection Points (DP): points in processing at which notifications (to the service logic) can occur and transfer of control (to the gsmSCF) is possible are called Detection Points (DPs).

Dialled Service CAMEL Subscription Information (D‑CSI): D‑CSI identifies the subscriber as having originating CAMEL dialled services.

Forwarding MSC: MSC which is either an MSC invoking a standardized Call Forwarding supplementary service or Call Deflection supplementary service; or an MSC invoking a CAMEL based call forwarding service.

Gateway MLC (GMLC): functional entity that allows external LCS Clients to request real-time information about a Mobile Station. The information that can be requested from the GMLC is:

– location of Mobile Station

See 3GPP TS 23.271 [28] and 3GPP TS 25.305 [32] or 3GPP TS 43.059 [46] for information on the GMLC.

Geodetic Information: information defining the location of a mobile station, coded according to ITU‑T Recommendation Q.763 [43]. The derivation of this information from other information defining the location of a mobile station is a network operator option. If an entity derives the geodetic information it shall also provide the equivalent geographical information.

Geographical Information: information defining the location of a mobile station, coded according to 3GPP TS 23.032 [13].

GPRS CAMEL Subscription Information (GPRS‑CSI): GPRS‑CSI identifies the subscriber as having GPRS CAMEL services.

GPRS Dialogue: A dialogue between the gprsSSF and the gsmSCF. A single GPRS Dialogue may consist of one or more TCAP dialogues. Only one TCAP dialogue shall exists at one point in time for one gprsDialogue.

GPRS Service Switching Function (gprsSSF): functional entity that interfaces the SGSN to the gsmSCF. The concept of the gprsSSF is derived from the IN SSF, but uses different triggering mechanisms because of the nature of the mobile network.

GPRS Session: GPRS session starts when the GPRS subscriber attaches to the GPRS data network. It ends when the GPRS subscriber detaches from the GPRS data network.

GSM Service Control Function (gsmSCF): functional entity that contains the CAMEL service logic to implement OSS. It interfaces with the gsmSSF, the gsmSRF, the GMLC and the HLR.

GSM Service Switching Function (gsmSSF): functional entity that interfaces the MSC or GMSC to the gsmSCF. The concept of the gsmSSF is derived from the IN SSF, but uses different triggering mechanisms because of the nature of the mobile network.

GSM Specialised Resource Function (gsmSRF): functional entity which provides various specialized resources. It interfaces with the gsmSCF and with the MSC. This entity is defined in ITU‑T Recommendation Q.1224 [44] with variations defined in the present document.

Inter-connecting MSC: MSC which provides CAMEL support for incoming trunk calls.

Location Information: indicates the location of the Mobile Station. The provision of location information is independent of the MS status. As part of the location information, an indication of the age of this information may be delivered.

Mobile Originating Short Message Service CAMEL Subscription Information (MO‑SMS‑CSI): MO‑SMS‑CSI identifies the subscriber as having MO SMS CAMEL services. MO‑SMS‑CSI (CAMEL Phase 4) is identical to SMS‑CSI (CAMEL Phase 3).

Mobile Station State: similar to Subscriber State, but associated only with a Mobile Station, not with a subscriber.

Mobile Terminating Short Message Service CAMEL Subscription Information (MT‑SMS‑CSI): MT‑SMS‑CSI identifies the subscriber as having MT SMS CAMEL services.

Mobility Management event CAMEL Subscription Information (M‑CSI): M‑CSI identifies the subscriber as having Mobility Management event notification CAMEL services.

Mobility Management event GPRS CAMEL Subscription Information (MG‑CSI): MG‑CSI identifies the GPRS subscriber as having Mobility Management event notification CAMEL services.

NA (North American): prefix attached to certain information items used by North American PLMNs in connection with routing a call to a preferred or dialled long distance carrier.

Network CAMEL Service Information (N‑CSI): N‑CSI identifies services offered on a per-network basis by the serving PLMN operator for all subscribers.

Originating Basic Call State Model (O‑BCSM): originating half of the BCSM. The O‑BCSM corresponds to that portion of the BCSM associated with the originating party.

Originating CAMEL Subscription Information (O‑CSI): O‑CSI identifies the subscriber as having originating CAMEL services.

Point In Association (PIA): PIAs identify MSC/VLR or SGSN activities associated with one or more basic association/connection states of interest to OSS service logic instances.

Point In Call (PIC): PICs identify MSC/VLR (GMSC) activities associated with one or more basic call/connection states of interest to OSS service logic instances.

Service Key: Service Key identifies to the gsmSCF the service logic. The Service Key is administered by the HPLMN, and is passed transparently by the VPLMN/IPLMN to the gsmSCF. The Service Key is a part of the T/O/VT/D/GPRS/SMS/M‑CSI.

Serving MLC: functional entity that performs location information retrieval.

Short Message Control Protocol (SM-CP): Protocol between the MSC or SGSN and the MS. This protocol, which is specified in 3GPP TS 24.011 [31], is used to carry RPDU elements between the MSC or SGSN and the MS.

Short Message Service Centre (SMSC): also abbreviation SC is used for SMSC.

Subscriber State: see 3GPP TS 22.078 [6].

Supplementary Service Notification CAMEL Subscription Information (SS‑CSI): SS‑CSI identifies the subscriber as having supplementary service invocation notification CAMEL services.

Terminating Basic Call State Model (T‑BCSM): terminating half of the BCSM. The T‑BCSM corresponds to that portion of the BCSM associated with the terminating party.

Terminating CAMEL Subscription Information (in the GMSC) (T‑CSI): T‑CSI identifies the subscriber as having terminating CAMEL services in the GMSC.

Translation Information Flag (TIF‑CSI): TIF‑CSI is a flag in the CAMEL subscriber data which indicates that when the subscriber registers a forwarded-to number, that the HLR shall not attempt to perform any translation, number format checks, prohibited FTN checks, call barring checks.

Trunk Originated CAMEL Service Information (TO-CSI): TO-CSI identifies services offered by the PLMN operator to all incoming calls on a specific MSC trunk.

USSD CAMEL Subscription Information (U‑CSI): U‑CSI identifies a set of subscriber specific mappings from a USSD service code to a gsmSCF address.

USSD General CAMEL Service Information (UG‑CSI): UG‑CSI globally identifies a set of mappings from a USSD service code to a gsmSCF address. The global mapping applies to all HPLMN subscribers. If, for a particular service code, both U‑CSI and UG‑CSI are applicable then the U‑CSI shall take precedence.

VMSC Terminating CAMEL Subscription Information (VT‑CSI): VT‑CSI identifies the subscriber as having terminating CAMEL services in the VMSC.

3.2 Abbreviations

Abbreviations used in the present document are listed in 3GPP TR 21.905 [1].

For the purposes of the present document, the following abbreviations apply:

BCSM Basic Call State Model

CAMEL Customized Applications for Mobile network Enhanced Logic

CPH Call Party Handling

CS Call Segment

CS Circuit Switched

CSA Call Segment Association

CSG Closed Subscriber Group

CSID Call Segment (followed by an identification Number e.g. CSID1)

DP Detection Point

DTN Deflected To Number

D‑CSI Dialled Services CAMEL Subscription Information

EDP Event Detection Point

EDS Enhanced Dialled Services

FTN Forwarded To Number

GMLC Gateway MLC

GMSC Gateway MSC

GPRS General Packet Radio Service

gprsSSF GPRS Service Switching Function

GPRS‑CSI GPRS CAMEL Subscription Information

gsmSCF GSM Service Control Function

gsmSRF GSM Specialised Resource Function

gsmSSF GSM Service Switching Function

HLR Home Location Register

HPLMN Home PLMN

ICA Initiate Call Attempt

IE Information Element

IF Information Flow

IP Intelligent Peripheral

IPLMN Interrogating PLMN

LCS Location Services

LSA Localised Service Area

M‑CSI Mobility Management event Notification CAMEL Subscription Information

MF Mobile Forwarding

MG‑CSI Mobility Management event Notification GPRS CAMEL Subscription Information

MLC Mobile Location Centre

MNP Mobile Number Portability

MNP SRF Mobile Number Portability Signalling Relay Function

MO Mobile Originating

MO‑SMS‑CSI Mobile Originated Short Message Service CAMEL Subscription Information

MSC Mobile service Switching Centre

MT Mobile Terminating

MT Mobile Terminating in GMSC

MT‑SMS‑CSI Mobile Terminating Short Message Service CAMEL Subscription Information

N‑CSI Network CAMEL Service Information

NA North American

NNI Network Node Interface

O‑BCSM Originating Basic Call State Model

O‑CSI Originating CAMEL Subscription Information

ODB Operator Determined Barring

OR Optimal Routeing

OSS Operator Specific Service

PDP Packet Data Protocol

PIC Point In Call

PLMN Public Land Mobile Network

SGSN Serving GPRS Support Node

SLPI Service Logic Program Instance

SM Short Message

SM-CP Short Message Control Protocol

SMF Service Management Function

SMLC Serving MLC

SMRSE Short Message Relay Service Element

SMS Short Message Service

SMSC Short Message Service Centre

SMS‑CSI Short Message Service CAMEL Subscription Information

SS‑CSI Supplementary Service Notification CAMEL Subscription Information

T‑BCSM Terminating Basic Call State Model

T‑CSI Terminating CAMEL Subscription Information (in the GMSC)

TDP Trigger Detection Point

TO-CSI Trunk Originated CAMEL Service Information

TPDU Transfer Protocol Data Unit

TIF‑CSI Translation Information Flag

U‑CSI USSD CAMEL Subscription Information

UG‑CSI USSD General CAMEL Service Information

UNI User Network Interface

VLR Visitor Location Register

VPLMN Visited PLMN

VT Mobile Terminating in VMSC

VT‑CSI VMSC Terminating CAMEL Subscription Information